code: def test_normalize_package_name():
      assert _normalize_package_name("abc") == "abc"
      assert _normalize_package_name("ABC") == "abc"
      assert _normalize_package_name("a-b-c") == "a-b-c"
      assert _normalize_package_name("a.b.c") == "a-b-c"
      assert _normalize_package_name("a_b_c") == "a-b-c"
      assert _normalize_package_name("a--b--c") == "a-b-c"
      assert _normalize_package_name("a-._b-._c") == "a-b-c"
  
imports: import importlib
  import os
  import sys
  from unittest import mock
  import importlib_metadata
  import pytest
  import mlflow
  import mlflow.utils.requirements_utils
  from mlflow.utils.environment import infer_pip_requirements
  from mlflow.utils.requirements_utils import _capture_imported_modules, _get_installed_version, _get_pinned_requirement, _infer_requirements, _is_comment, _is_empty, _is_requirements_file, _join_continued_lines, _normalize_package_name, _parse_requirements, _prune_packages, _PyPIPackageIndex, _strip_inline_comment, _strip_local_version_label
label_desc: Use image node_id 7 for calling a global function with example usage: test_normalize_package_name() without return types